static Component* findDragAndDropTarget (Component* c, const ComponentPeer::DragInfo& info, Component* lastOne)
{
for (; c != nullptr; c = c->getParentComponent())
if (isSuitableTarget (info, c) && (c == lastOne || isInterested (info, c)))
return c;
return nullptr;
}
void EntitySystem::check(EntityPtr e)
{
assert(e != NULL);
bool doesContain = contains(e);
bool isInterestedInEntity = isInterested(e);
// If the EntitySystem IS interested in the component
// and DOES NOT contain the Entity already
if (isInterestedInEntity && !doesContain)
{
// add it to the system
insert(e);
}
// otherwise if the EntitySystem isn't interested in the component
// and it does contain the Entity, remove it.
// i.e. this EntitySystem no longer wants the Entity
else if (!isInterestedInEntity && doesContain)
{
// remove it from the system
remove(e);
}
}
